Used excavator 20 ton

Types of used excavator 20 tons

Excavators are heavy construction equipment with a used excavator 20 ton bucket, cab, arm, tracks, and other components. The primary function of excavators is to dig and remove soil, rock, and other materials from the ground. Excavators are available in various weights and sizes to suit different projects. The following are some of the commonly known excavator types:

• Crawler excavators

  Crawler excavators are heavy construction equipment with two massive continuous tracks for moving and stability. They are designed for rough terrain and excellent stability during the excavating process. Crawler excavators are good examples of a used excavator 20 ton and are well suited for large-scale excavation projects, construction, mining, and damping tasks. Crawler excavators dig by moving tracks, which results in high stability and hydraulic power. Hydraulic power is then used to move and control an excavator arm and bucket for digging and moving materials.

• Mini excavators

  Mini excavators, also known as compact excavators, are small construction equipment used to dig and move materials. They are designed for moving and digging in tight spaces, making them ideal for landscape projects, utility installation, road construction, and backfilling. Mini excavators are equipped with tracks or wheels that provide stability and allow for smoothly moving around a worksite. They use hydraulic power to control an excavator arm and bucket that are used for digging and moving materials. Like crawler excavators, mini excavators are also good examples of a used excavator 20 ton.

• Wheeled excavators

  A wheeled excavator is a heavy construction equipment used for excavation tasks that have four or more wheels. They are designed for high-speed travel on flat surfaces like paved roads and rough terrain. Wheeled excavators are ideal for a variety of tasks such as drainage work, urban construction, road building, and land clearing. Wheeled excavators are similar to crawler excavators in design and function. However, they are equipped with wheels instead of continuous tracks. This allows the wheeled excavator to travel quickly to different work areas without the need for additional support vehicles.

• Dragline excavators

  A dragline excavator is a type of heavy construction equipment used in large-scale excavation and digging tasks. The dragline excavators use a specialized hoist system to lower and pull materials in large quantities from a pit or an area. Dragline excavators are suited for surface mining, large-scale earth moving, dam construction, coastal dredging, and bucket-wheel digging. A dragline excavator consists of a huge bucket suspended from a set of wires and ropes on a tall frame called a draglink. The excavator operator controls the dragline by remotely releasing and winding the wires and ropes to precisely lower and pull materials from the desired area.

• Bucket-wheel excavators

  A bucket-wheel excavator is a large conveyor and continuous dug equipment used for the mining and digging of materials in massive volumes. They are used for coal, mineral, and earth-moving in open pit mines, large-scale land reclamation, and construction projects. A bucket-wheel excavator works by rotating a large bucket wheel with several attached buckets. The excavator is then used to scoop up materials from a designated area or pit. The material is then deposited onto a collecting conveyor belt, where it is distributed to other processing facilities or stockpiles.

Specification and maintenance of 20-ton used excavators

Specification

• Operating weight: The overall weight of a 20-ton used excavator is typically around 20,000-21,000 kg.
• Engine power: The engine output power of a 20-ton excavator is usually between 120-150 kW, which can provide sufficient driving power for various operational tasks.
• Hydraulic system: The flow rate of a 20-ton excavator's hydraulic system is generally around 200-250 L/min, which can provide high pressure and ample flow for the operation of hydraulic components.
• Digging depth and range: The digging depth of a 20-ton used excavator can typically reach 5-7 meters, while the maximum horizontal range can reach 8-10 meters.
• Bucket capacity: The bucket capacity of a 20-ton excavator is usually between 0.8-1.2 cubic meters, which determines the amount of soil and materials it can handle in one operation.
• Tire/track: The 20-ton used excavator is equipped with tires or tracks suitable for different working environments and terrain. Tire specifications may include: 23.5-25, etc. Track specifications may include: width 450mm, width 600mm, etc.

Maintenance

• Regular inspection: Check the overall conditions of the 20-ton used excavator, including appearance, structures, tracks or tires, etc., to ensure there are no loose, deformed, or damaged components.
• Engine and hydraulic system maintenance: Regularly replace the engine oil, oil filters, air filters, etc. of the excavator, and also conduct the necessary cleaning and maintenance for the hydraulic system to ensure good operating conditions of the hydraulic pump and hydraulic cylinders.
• Maintain tracks or tires: For excavators with tracks, regularly inspect and adjust track tightness to avoid track wear or slippage. Excavator tires should be maintained similarly; also, ensure that the pressure of the tires is at the proper value and avoid over-wear.
• Electrical system maintenance: Regularly check the electrical system of the excavator, including cables, connectors, and lighting, etc., to ensure a reliable power supply and good visibility.
• Clean excavators: Cleaning the excavator, including cleaning the external surfaces and the insides, such as the engine compartment and hydraulic system, helps prevent overheating of the engine, ensuring good heat dissipation, and lowering the hydraulic system's failure rate.
• Maintenance of ancillaries: Examine and maintain the ancillary equipment of the excavator, such as the bucket, arm, and rotating platform, to ensure they are functioning properly and to adjust and lubricate them as required.
• Regular maintenance: In addition to routine maintenance, it is also necessary to conduct regular professional maintenance for 20-ton used excavators as per the requirements from the manufacturer. This includes replacing critical parts, debugging the equipment, and conducting further specialized maintenance thoroughly.

Scenarios

Used excavator 20 tons are versatile pieces of equipment that can be used in a wide range of construction and excavation projects. Some common usage scenarios for 20-ton excavators are as follows:

• Digging and earthmoving: 20-ton excavators can carry out heavy digging and earthmoving tasks. They are often used to dig and clear large amounts of soil for foundational work, trenching, backfilling, and grading.
• Demolition: Excavators with hydraulic breakers or shears attachments can handle demolition tasks. They can safely demolish structures, walls, and pavements and break large concrete structures with precision.
• Material-handling: 20-ton excavator deals with material-handling tasks. This machine can load, unload, sort, and stack materials such as stones, pipes, steel, and timber with ease and efficiency.
• Construction projects: Excavators are crucial for many construction projects, such as building roads, bridges, and drainage systems. 20-ton excavators are frequently employed for the construction of large infrastructural projects.
• Mining operations: 20-ton excavators are still being used in some small-scale mining and extraction operations. They can mine and extract minerals, stones, and ores as well as load materials onto trucks and processing facilities.
• Demolition: 20-ton excavators equipped with specialized attachments, such as wrecking balls or hydraulic shears, are commonly used in demolition projects. They can demolish buildings, structures, and bridges with precision and control.

How to choose used 20-ton excavators

When looking for a used excavator, there are a couple of key elements to help one narrow down the options. Considering the parameter will help buyers ensure that they get a reliable and high-performing excavator.

One should first determine the type of excavator he or she needs based on the intended use. After determining the type, the next thing to do is to assess the operating condition of the excavator and its maintenance history. Consider used excavators that have been well-maintained with regular servicing records. Look into the machine's overall physical condition, including the tracks, buckets, seals, and hoses. A thorough inspection will help one discover underlying issues that may affect the excavator's performance.

When choosing a used excavator, consider its operating hours. Excavators with lower operating hours tend to have less wear and tear. A powerful and efficient engine is vital for optimal excavator performance. When choosing a used excavator, consider the ones with strong and efficient engines. Check the hydraulic system, as this is the driving force behind the excavator. Test the hydraulic functions, such as the boom, bucket, swing, and thrust, to ensure they are smooth and responsive.

Monitor the excavator's electronic system. Many used excavators today come with advanced technology that helps operators monitor and control various functions of the machine. Consider an excavator with effective and good tracks or tires. If possible, take the excavator for a test run. A test run allows one to experience the machine's performance and functionality. Finally, buyers should verify important documents, including ownership records and maintenance logs. This helps to ensure that the excavator has a clear ownership history and has been properly maintained.

Used excavator 20 ton Q&A

Q1. What does 20 ton mean in excavators?

A1. The weight and size of an excavator are often measured in tonnage. A 20-ton excavator weighs about 20,000 kilograms (20 tons) and falls into the large excavator category. Such excavators are suited for sizable duties like demolition, digging, and land filling, especially in the construction and mining industries.

Q2. How much excavator used market is worth?

A2. The global excavator market size was valued at USD 61.8 billion in 2022 and is expected to boom, with a compound annual growth rate (CAGR) of 6.8% from 2023 to 2030.

Q3. What are the factors to consider when buying used excavators?

A3. The demand for excavators is likely to continue to grow in the years to come. When buying the most suitable excavator for a particular task, the following factors should be looked at carefully: the working condition of the machine, the availability of spare parts, the maintenance history, and the support from the local dealer.

Q4. What are some benefits of buying used excavators?

A4. The used excavator market is huge, and many condition grades are available. More and more buyers are choosing used excavators, as they are more affordable than new ones and can still offer reliable performance. Used excavators are available in various models and specifications, so buyers will have plenty of choices.